Painless Trigonometry ( December 31 – January 6, 2014)
Circling the triangle
Triangle ABC is inside circle O. Angle BAC = 60°. , . What is the area of circle O in terms of π?
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Correct answer were submitted by:
1. Arsh Singh. yourmathguru.com
2. Kennard Ong Sychingping. De La Salle University
3. Kenny Wong, Jurong Junior College, Singapore